This LPIC-2 practice question tests your understanding of network client management. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO options in dhcpd.conf are used to define the subnet and the address range for dynamic allocation? (Select two.)
option subnet-mask 255.255.255.0;
Why wrong: Sets a DHCP option, not the subnet or range.
pool { ... }
Why wrong: A container for ranges, but not the primary definition of subnet/range.
range 192.168.1.10 192.168.1.100;
Defines the dynamic address pool.
host fixed-address 192.168.1.200;
Why wrong: Used for static assignments.
subnet 192.168.1.0 netmask 255.255.255.0 { ... }
Defines the subnet.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
range 192.168.1.10 192.168.1.100;
Option C is correct because the `range` directive in `dhcpd.conf` explicitly defines the pool of IP addresses available for dynamic (DHCP) allocation. Option E is correct because the `subnet` declaration specifies the network segment and netmask, creating the context in which the `range` statement must be nested to function. Together, they define both the subnet boundary and the dynamic address pool.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
option subnet-mask 255.255.255.0;
Why it's wrong here
Sets a DHCP option, not the subnet or range.
pool { ... }
Why it's wrong here
A container for ranges, but not the primary definition of subnet/range.
range 192.168.1.10 192.168.1.100;
Why this is correct
Defines the dynamic address pool.
Related concept
Read the scenario before looking for a memorised answer.
host fixed-address 192.168.1.200;
Why it's wrong here
Used for static assignments.
subnet 192.168.1.0 netmask 255.255.255.0 { ... }
Why this is correct
Defines the subnet.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
LPI often tests the distinction between the `subnet` declaration (which defines the network boundary) and the `option subnet-mask` statement (which is a client-facing parameter), leading candidates to incorrectly select the option as a definition of the subnet itself.
Detailed technical explanation
In ISC DHCP, the `subnet` declaration creates a scope that binds the server to a specific network interface and defines the broadcast domain; the `range` statement must appear inside that subnet block to enable dynamic address assignment. A common subtlety is that you can have multiple `range` statements within a single `subnet` declaration to create disjoint pools, but each range must fall within the subnet's address space. In real-world deployments, misconfiguring the subnet mask in the `subnet` line versus the `option subnet-mask` line can lead to clients receiving incorrect netmasks, causing routing failures.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
What to study next
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FAQ
Network Client Management — This question tests Network Client Management — Read the scenario before looking for a memorised answer..
The correct answer is: range 192.168.1.10 192.168.1.100; — Option C is correct because the `range` directive in `dhcpd.conf` explicitly defines the pool of IP addresses available for dynamic (DHCP) allocation. Option E is correct because the `subnet` declaration specifies the network segment and netmask, creating the context in which the `range` statement must be nested to function. Together, they define both the subnet boundary and the dynamic address pool.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
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